OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*; W1 ? }- d: C0 K
* edma_test.c
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*
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* brief EDMA3 Test Application% n. ?) D d1 |3 [, O# j
*
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* This file contains EDMA3 Test code.' b0 J$ R3 d9 V/ F* g8 d3 o* L
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE3 Y8 ^) N5 ]" ?9 N6 N& f
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' s% W, C0 _* _3 Z: f- B
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* This program is free software; you can redistribute it and/or, L6 [ |+ H: ?4 C, |; o$ ^
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any1 u# m$ N# c& X9 R F
* kind, whether express or implied; without even the implied warranty0 B5 g+ Z3 w% y7 |; u8 A
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>! N( D& D0 t4 `& e6 Z
#include <linux/interrupt.h>/ l) w' |. P; j% Z
#include <asm/io.h>
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#include <linux/moduleparam.h>/ @: l; f: Y; F: ^- I. n2 `% G# }8 j
#include <linux/sysctl.h>" C* f- } k/ b8 {8 Q& p# i) H
#include <linux/mm.h>3 V! [/ O. W% a* c% x e
#include <linux/dma-mapping.h>
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#include <mach/memory.h># K& |/ T7 r! F- ]9 |) I; \
#include <mach/hardware.h>9 @- p' U7 a; \3 z
#include <mach/irqs.h>6 n9 a+ p! B3 a( ]% m( G! g7 i
#include <asm/hardware/edma.h>4 P& m- W" h6 F+ k1 x. F) h( i0 N
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 t; O2 ?$ b# {5 s; ^$ V; w
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) R# r; V( Y0 o0 v8 E5 f2 n! e
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ B! j" P4 L3 l4 c" Y
#else6 `, w8 v k" J; a
#define DMA_PRINTK( x... )
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#define DMA_FN_IN/ D/ _8 _+ |/ R: J
#define DMA_FN_OUT3 {) b6 s5 ~; g
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 u8 A- t! ]% d/ v
#define STATIC_SHIFT 35 n, G3 |2 A: I2 C5 B; F' x* c2 d
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21* k L" n; S0 a& Y
#define TCCHEN_SHIFT 228 u: `) B9 p, b h- r7 c5 s# E8 o
#define ITCCHEN_SHIFT 23; f$ N/ |: L# U& l" Q& U: Z/ U
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static volatile int irqraised1 = 0;$ V3 r( ?) A! v8 Q0 i, R
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# R4 ^+ ^; j6 a8 x- k) N( b
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 M& _9 b6 h( u( b ~+ l; `; p
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;, F) `9 f1 K! E' z7 C
dma_addr_t dmaphysdest1 = 0;: ]* ~. L l0 f: ~! ^) ^5 Y
dma_addr_t dmaphysdest2 = 0;) W3 B3 N7 e* [3 ~% f; R6 N3 Q
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char *dmabufsrc1 = NULL;! R; G0 i' s2 x; E
char *dmabufsrc2 = NULL;# k% v9 X/ z7 h& K" M7 ~
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;8 o" j5 M7 D* ?# b7 ?* S$ @
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static int acnt = 512;+ i. G7 V8 R9 j" h2 N! S6 _
static int bcnt = 8;' y+ N, y7 a3 J4 I9 e4 W+ w
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);1 ^3 N( R+ o! M3 o; d' K
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动